Manual installation tutorial
In order to develop on decidim, you’ll need:
Ruby 2.5.0 (2.3+ should work just fine, but that’s the version we test against)
Chrome browser and chromedriver.
We’re starting with an Ubuntu 16.04 LTS. This is an opinionated guide and YMMV, so if you’re free to use the technology that you fell most comfortable on. If you have any doubts and you’re blocked you can go and ask on our Gitter. We recommend that you follow some Ruby on Rails tutorials (like Getting Started with Ruby on Rails) and have some knowledge on how gems and engines work.
On this tutorial we’ll see how to install rbenv, PostgreSQL and Decidim, and how to configure everything together.
First we’re going to install rbenv, for managing various ruby versions. We’re following the guide from DigitalOcean. You could also use rvm as an alternative on this step. On these instruction we’re using the latest ruby published version at the moment (2.5.3), but you should check this out on Ruby official website.
sudo apt update sudo apt install -y build-essential autoconf bison libssl-dev libyaml-dev libreadline-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev libicu-dev git clone https://github.com/rbenv/rbenv.git ~/.rbenv echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc echo 'eval "$(rbenv init -)"' >> ~/.bashrc source ~/.bashrc git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build rbenv install 2.5.3 rbenv global 2.5.3 echo "gem: --no-document" > ~/.gemrc gem install bundler
Now we’re going to install PostgreSQL for the database:
sudo apt install -y postgresql libpq-dev sudo -u postgres psql -c "CREATE USER decidim_app WITH SUPERUSER CREATEDB NOCREATEROLE PASSWORD 'thepassword'"
You need to change the password (on this example is "thepassword") and save it somewhere to configure it later with the application.
Next, we need to install the
gem install bootsnap gem install listen gem install decidim
Afterwards, we can create an application with the nice
decidim executable, where
decidim_application is your application name (ie decidim.barcelona):
decidim decidim_application cd decidim_application
We recommend that you save it all on Git.
git init . git commit -m "Initial commit. Generated with Decidim 0.X https://decidim.org"
You need to modify your secrets (see
config/database.yml). For this you can use figaro, dotenv or rbenv-vars. You should always be careful of not uploading your plain secrets on git or your version control system. You can also upload the encrypted secrets, using the sekrets gem or if you’re on Ruby on Rails greater than 5.1 you can do it natively.
For instance, for working with figaro, add this to your
Then install it:
bundle install bundle exec figaro install
Next add this to your
config/application.yml, using the setup the PostgreSQL database name, user and password that you configure before.
DATABASE_HOST: localhost DATABASE_USERNAME: decidim_app DATABASE_PASSWORD: your_password
Finally, save it all to git:
git add . git commit -m "Adds figaro configuration management"
We should now setup your database:
bin/rails db:create db:migrate bin/rails db:seed
This will also create some default data so you can start testing the app:
decidim123456, to log in at
Decidim Staging. You probably want to change its name and hostname to match your needs.
Decidim::Useracting as an admin for the organization, with email
Decidim::Userthat also belongs to the organization but it’s a regular user, with email
This data won’t be created in production environments, if you still want to do it, run:
SEED=true rails db:setup
When you run
bin/rails db:migrate you should see a lot of output. If you don’t, or if you run into errors seeding your database, try runnning
bin/rake decidim:upgrade before.
You can now start your server!
Visit http://localhost:3000 to see your app running. 🎉 🎉